D.one O.n L.onely by O.neself. Meaning doing something on your own without the help or advice of others. Informal; originated in the New York area and commonly used by hip hop artists from that particular region.

"dolo of delf for self, see there's no one else" - Q-Tip ("Award Tour" by A Tribe Called Quest)

"I'm smoking this rillo all by myself."
"Come on dog I'm broke, pass the blunt!"
"No you're not man, I just watched you buy an eighth. Stop being a roach!"
"You're really gonna sit here in front of me and smoke dolo?"
"Yuhh."

Going to Dolores Park in San Francisco, and doing the things one does there: day drinking craft beers or PBR, probably having some edibles, wearing questionable clothing, hula hooping, people watching, letting your dog do whatever the hell it wants, letting your hipster kids do whatever the hell they want, playing field sports, pretending to read something highly intellectual, playing some oddball international instrument, picnicking with goods from BiRite, watching out for @KarltheFog, etc., etc.